Often I'll come across a film that isn't screening in theatres (near me or sometimes anywhere) and I want to be alerted when it is available on DVD.
The same could apply for a book or even a CD.
Is ...

Are there any webapps that can keep track of collections? I have a large library of books and DVDs and I would like some way to keep track of what I have and what I have loaned out to friends. Does ...